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— Choose a Frequently Asked Question (FAQ) —
 
211.-

I saw a test of my water and now I am worried about particular contaminants. What should I know about these contaminants?
212.-

I tested my water and it has a pH of less than 5.5, so what should I do?
213.-

I use blue-colored sanitizer in my toilet flush tanks and recently had blue water coming from the tap at my kitchen sink after the city flushed fire hydrants on my street. Is there a connection and is this a common problem?
214.-

If a granular activated carbon (GAC) filter unit is being used to remove radon from water is exposure to this unit a radiation health risk?
215.-

If di(2-ethylhexyl) phthalate (DEHP) can leach from polyvinyl chloride (PVC) plastic or polybutylene (PB) plastic plumbing components, and the U.S. Department of Health and Human Services has determined that DEHP is a potential human carcinogen, why have so many household plumbing systems and water distribution systems made such widespread use of plastics that contain phthalates?
216.-

If elemental chlorine is so effective as a water disinfectant, why are municipal water systems seeking alternative chlorine formulations?
217.-

If I am infected by Helicobacter pylori (H. pylori) bacteria from a contaminated drinking water source, how long will the infection persist without treatment?
218.-

If I ground a home appliance or electrical circuit to my metal water plumbing system will this cause corrosion?
219.-

If I have blue-green staining of my plumbing fixtures should I be concerned about too much lead in my drinking water?
220.-

If I install a home treatment device or drink bottled water will I loose the benefits of fluoride in my drinking water?
221.-

If I suspect that I have cryptosporidiosis, what should I do?
222.-

If my hydrogen sulfide (H2S) problem is associated with sulfur bacteria in my well water supply, what can I do?
223.-

If my water has a blue-green tint, does that mean my water contains lead?
224.-

If my well water has tested positive for coliform bacteria, should my family drink bottled water?
225.-

If neighborhood wells in my area are contaminated by bacteria, should I absorb the costs for hooking up to a public water system to ensure the safety of my drinking water?
226.-

In an oxygenated water environment do metal ions from plumbing fixtures go into solution at the anode or cathode due to electrochemical corrosion?
227.-

In towns and cities, what is the major cause of pollution of drinking water sources?
228.-

Is all copper plumbing the same or are some grades more susceptible to corrosion?
229.-

Is blue-green algae affected water safe to drink after it has been boiled or filtered?
230.-

Is copper plumbing corrosion just a problem for homeowners who have private water systems?
231.-

Is it advisable to follow the recommendations of equipment manufacturers on use of particular types of membranes in nanofiltration (NF) and hyperfiltration (HF, also called reverse osmosis or RO) systems?
232.-

Is it advisable to use a water softener with lead water pipes?
233.-

Is it better to rely on some type of pretreatment process to lower dissolved organic carbon (DOC) in a raw water supply that is leading to formation of unacceptable levels of disinfection byproducts (DBPs), or is it better to remove disinfection byproducts from the finished water supply?
234.-

Is it possible for arsenic to exceed the drinking water standard at customers' taps when arsenic concentration in a raw water source is below the drinking water standard?
235.-

Is lead (Pb) leaching from pipe scales an issue for all water distribution systems?
236.-

Is my drinking water supply subject to sabotage?
237.-

Is nitrate (NO3-) in our diets from the water we drink or food we eat as bad for us as we once thought?
238.-

Is nitrate becoming more of a problem in shallow ground waters used for drinking water supplies?
239.-

Is nitrification (bacterial production of nitrite) in a drinking water system more of a concern for water systems that use chloramines instead of chlorine gas as a secondary disinfectant?
240.-

Is ozone harmful or toxic?
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This website was developed by the ACES Water Quality Team, under the leadership of Dr. James E. Hairston. It is funded, in part, by USDA-CSREES water quality grant support under Section 406 of the Agricultural Research, Extension and Education Reform Act of 1998.